Bring the water to a boil and steep the tea for 5 minutes.
Press and discard the tea bag.
Add the dates to the tea and puree until smooth.
If the mixture is too thick, add a little water; if too thin, add the fourth date.
Puree the banana with the vanilla until smooth.
If using the maca, puree it with the banana.
Add 1t of the pureed banana and the sea salt to the caramel, and stir to combine.
Spoon out the banana to a dish, garnish with caramel and walnuts and serve.